Good afternoon, I am trying to compile gcc 9.3.0 on an IBM power 7 running AIX 7.2, but I have not been able to get past the error: error: conflicting declaration of C function 'void* sbrk(int)' 488 | extern void *sbrk (int); I have attempted what I found on this page: https://www.mail-archive.com/bug-bash@xxxxxxx/msg21215.html. It appeared to get through another stage, but still received the same error. Any help on this is greatly appreciated. Configure: ../gcc-9.3.0/configure --prefix=/MACHINE_INSTALL/gcc-9.3.0 --enable-languages=c,c++ --disable-multilib CC=/opt/freeware/bin/gcc CXX=/opt/freeware/bin/g++ CPP=/opt/freeware/bin/cpp --with-gmp=/opt/freeware/lib --with-mpfr=/opt/freeware/lib --with-mpc=/opt/freeware/lib Full error: /MACHINE_INSTALL/build/gcc_build_obj_dir/./prev-gcc/xg++ -B/MACHINE_INSTALL/build/gcc_build_obj_dir/./prev-gcc/ -B/MACHINE_INSTALL/gcc-9.3.0/powerpc-ibm-aix7.2.2.0/bin/ -nostdinc++ -B/MACHINE_INSTALL/build/gcc_build_obj_dir/prev-powerpc-ibm-aix7.2.2.0/libstdc++-v3/src/.libs -B/MACHINE_INSTALL/build/gcc_build_obj_dir/prev-powerpc-ibm-aix7.2.2.0/libstdc++-v3/libsupc++/.libs -I/MACHINE_INSTALL/build/gcc_build_obj_dir/prev-powerpc-ibm-aix7.2.2.0/libstdc++-v3/include/powerpc-ibm-aix7.2.2.0 -I/MACHINE_INSTALL/build/gcc_build_obj_dir/prev-powerpc-ibm-aix7.2.2.0/libstdc++-v3/include -I/MACHINE_INSTALL/build/gcc-9.3.0/libstdc++-v3/libsupc++ -L/MACHINE_INSTALL/build/gcc_build_obj_dir/prev-powerpc-ibm-aix7.2.2.0/libstdc++-v3/src/.libs -L/MACHINE_INSTALL/build/gcc_build_obj_dir/prev-powerpc-ibm-aix7.2.2.0/libstdc++-v3/libsupc++/.libs -c -g -O2 -fno-checking -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -DGENERATOR_FILE -fno-PIE -I. -Ibuild -I/MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc -I/MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/build -I/MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/../include -I/MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/../libcpp/include \ -o build/genmodes.o /MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/genmodes.c In file included from ./bconfig.h:3, from /MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/genmodes.c:20: ./auto-host.h:2379:16: error: declaration does not declare anything [-fpermissive] 2379 | #define rlim_t long | ^~~~ In file included from /MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/genmodes.c:21: /MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/system.h:488:14: error: conflicting declaration of C function 'void* sbrk(int)' 488 | extern void *sbrk (int); | ^~~~ In file included from /MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/system.h:294, from /MACHINE_INSTALL/build/gcc_build_obj_dir/../gcc-9.3.0/gcc/genmodes.c:21: /MACHINE_INSTALL/build/gcc_build_obj_dir/prev-gcc/include-fixed/unistd.h:930:34: note: previous declaration 'void* sbrk(intptr_t)' 930 | extern void *sbrk(intptr_t); | ^~~~ make[3]: *** [Makefile:2666: build/genmodes.o] Error 1 make[3]: Leaving directory '/MACHINE_INSTALL/build/gcc_build_obj_dir/gcc' make[2]: *** [Makefile:4710: all-stage2-gcc] Error 2 make[2]: Leaving directory '/MACHINE_INSTALL/build/gcc_build_obj_dir' make[1]: *** [Makefile:20487: stage2-bubble] Error 2 make[1]: Leaving directory '/MACHINE_INSTALL/build/gcc_build_obj_dir' make: *** [Makefile:997: all] Error 2 Thank you, Dan
